This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A215309 #5 Sep 08 2022 08:46:03
%S A215309 2,3,5,41,43,59,79,97,157,173,191,193,211,229,233,269,271,307,347,383,
%T A215309 401,419,421,439,457,461,499,571,613,647,727,743,761,839,857,877,953,
%U A215309 971,991,1009,1031,1069,1103,1123,1181,1217,1237,1259,1297
%N A215309 Primes congruent to {1, 2, 3, 5} mod 19.
%H A215309 Vincenzo Librandi, <a href="/A215309/b215309.txt">Table of n, a(n) for n = 1..1000</a>
%t A215309 Select[Prime[Range[500]],MemberQ[{1,2,3,5},Mod[#,19]]&]
%o A215309 (Magma) [p: p in PrimesUpTo(1300) | p mod 19 in [1, 2, 3, 5]];
%Y A215309 Cf. A000040, A045313.
%K A215309 nonn,easy
%O A215309 1,1
%A A215309 _Vincenzo Librandi_, Aug 08 2012